Valve



Patented Dec. 18, 1928.

i UN ITED TAT ES PATENT xoFFICE L.TAUIES A; WOOD,"`OF TOLEDO, OHIO, ASSIGNOR TO VIIIJSYU'O-GAS COMPANY, OF ERIE,

fPENNSYLVANIA, A CORPORATION OF'PENNSYLVAN IA.

VALVE.

Application led `May 9, 1927. Serial No. 189,971.

fuel.

- Referring to the :drawings:

`F ig. 1 is a plan V"view, with parts broken away, of an embodiment of the 1nvent1on 1u `algas range;

Fig. 2is a section' on the line II-IL- Fig. 1

Fig. 3 is a section, on the line III-III,

F ig. 4is a section on the lineIV-IV, Fig.` 2; and

Fig.` 5 is `afsection on the line V-V, Fig. 2. Compressed gas `or .fuel supplytank 1` is `shown as yhaving valve 2` as a mainlcontrol mounted thereon, from whichuextendsduct 3to gas vrange41in which isV mounted burners 5, with `fuel control thereto, fromthe duct 3,.byxvalves havinghousing 6. The supply duct 3 is provided with T-fittings 7 with nipples Sextending into the housing 6 at `intake port 9. Outletport lhas threaded connection 11 with the housing. 6. `This outlet port extends vas afitt-ing 12 and is adjusted as to the housing 6 by locknut 13. This titting12 has therefrom fuel supply duct I14 to burners 5.

Disposed in theoutlet port 10,` is guide stem 15 of closure'plunger 16. This closure `plunger 16V has press-fit lor fixed assembly Helical compression spring 20 in this chamber `19 tends normally to engage the collar 18 and thrust the closure 16 away from closing position as to the outlet port 10. Washer 21, opposing the collar 18 remote from the spring 20, has rivet assembly 22 with the collar 18 for solder or tight anchor connection 23 with extensiondiaphragm 24 of accordion type.

This diaphragm 24 extends away from the chamber 19 in the housing 6 in chamber 25 and terminates in outwardly extending flange 26 anchored by nut 27 with the housing 6. This nut 27 is provided with sleeve 28 extending into the chamber 25 within the accordion diaphragm 24. This sleeve 28 has remote from the chamber 19 extension 29 upon which is mounted split ring 30 adjustable by clamp screw 31 'for positionw ing the stop32. Mounted yin the sleeve 28 is stem 33 having threaded terminus 34 upon which is-mounted nut 35 for thereby clamping hand wheel 36 against pin 37 at the desired angular' relation as to the stem Corrugation 38 Y providing seats for this Vstem 37.permitsangular shiftings of this `hand wheel 36101' the desired location of lthe hand wheel 36 as to the stem 33.

`This hand wheel 36 as inwardly extending wing or stop 39, which, in rotation of the hand -wheel 36 may abut the stop 32 in thereby determining ther degree of the angular rotationiof thehand wheel.

28. Accordingly, rotation of the hand wheel 36 affects an axial movement of this stem 33 relativelyto the valve housing 6.

This stem 33 has axially chambered portion 42 remote from the hand wheel 36. This chambered .portion 42 is internally threaded for `coacting with threaded portion 43 `of supplemental stem 44. This supple` mental stem 44 is .provided with pin 45 engaging in notches 46 of the sleeve 28 therebyiholding this supplemental pin 44 from rotation relatively to the housing 6. Ac

cordingly, the rotation of. the hand wheel 36, and with it of the stem 33 in eifecting an axial*niovementfofL the stem 33, also effects an axial movement of the supplementalstem 44 for thisstc1n44 as threaded with the stein 33 may not rotate, but is held from rotation The stenim `33 has threaded portion 40 coacting with lthreads 41 on the inner portion of the sleeve bythe pin 45 engaging in the notches 46.

There is accordingly therein, due to the differential threads 40, 43, a` positive axial shifting of `the supplemental stein 44 as to seat 47 fixed with the closure 16. This.'

means that the threads '40, 43, being of different pitch, a considerable angular shifting of the hand wheel 36 may occur with micrometer axial shifting of thesupplemental stem 44. Such shifting of the supplemental stem 44, away from the outlet 10, means that the spring 2() may thus be eiiective against the collar 18 for shifting the closure 16 into position for opening the port 10,

Inl the burning of gas, nicety in port opening is essential for efficient combustion. In the instances especially when burning casing head gases, it should be a port capacity with great nicety in adjustment in the desired capacity. With the plunger closure 15', 1G, but slight movement gives a ring port opening and at such opening, very extreme reiinement for flame height maintenance at the burners 5 may be obtained by the rotation of the hand wheel 36.

In order that there may not be ineiiicient eomlmstion, say by too great supply ot t'uel which might even tend to blow out the Haine, especially when under compressed gas tank supply, the hand wheel 36 has its opening maximum determined by the stops 39, These are adjustable as circumstances may seem desirable, by re-positioning the stop 39 as to the stem 33 by slacking ofi' the nut i5 for different recess engagement ot the corrugations 38 with the pin 87. Instead ot such adjustment, even for greater refinement than these corrugations 3S, there may be shifting ot the clamp 30 as to the sleeve extensions Q9 and reclaniping thereof by the bolt 31 Jfor positioning the stop 32. In the operation oiE this valve, the flow ot' even these high pressure gaseous fuels into the chamber 19 may not bring about leakage from the housing It with the port 10 closed, 'for the chamber 19 is isolated from the diii'ercntial flow device in the chamber Q5 hy the accordion diaphragm 2l as an extensible flexible connection. This means that the closure plunger 16 may be shifted by `means outside ot the chamber 19. As here shown, this shitting is against the action oi the spring 20, and the spring 20 thus effects the opening of the. port 10, and the diiterential flow device is a. positive means for eiiecting the closingot the port 10.

'What is claimed and it is desired to seeare by Letters Patentis:

l. A vvalve having supply and discharge ports, a. seat carrying member adjustable in one of said ports for varying the relationship of said scat and valve, a closure eoact-ing with said seat, and a diii'erential ac.- tnator for the closure.

2. A valve having supply and discharge ports, a. seat carrying member adjustable in one ot said ports for varying the relationship ot said seat and valve, a closure enacting with said seat, and a differential screw device coacting tor positioning the closure as to the seat.V

A valve having supply and discharge ports, a seat 1arrying member adjust-ab e in one of said ports for varying the relationship of saidseat and iivalve, a closure lcoacting with said seat, ra spring urging said closure in one direction, and a differential device opposing said spring for positively positioning the closure in the other direction.

Ll. A valve having a port, a closure for the port, a spring norn'ialli7 urging the closure. into port opening position, a diicrential screw for opposing the spring in shifting the closure to port closing position. and a closure seat providing member adjustable in said port for varying the springtcnsion *as urging the closure into port opening position.

A valve having a` port, a closure for the port-,- a spring normally urging the closure into port opening position, a differential screw for opposing the spring in shitting the closure to port closing position, and a variable stop for the screw comprising a pair ot abutnients, one carried by the screw, each ot said abutments being angularly adjustable as to its carrying means for varying the coacting relationship therebetween tor the screw in limiting the open position ot the closure. i

G. A valve having an outlet port, a seat at the port entrance shittable as to said valve, a plunger closure coacting with said scat and having a guide stem through said seat, a spring normally urging the closure into port opening position, and a differential screw device shiftable to permit spring shifting of the closure into opening position.

7. A valve housing having an outlet port, a passage providing adjustable member in said port forming a seat at said outlet port, a plunger closure having a guide stem into said adjustable member, a spring normally urging the closure into port opening position, a differential screw device shittable to permit spring shifting of the closure into opening position, and an extensible diaphragm connection between the housing and v closure.

In Witness whereof I affix my signature.

JAMES A. WOOD. 

